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Splitter, Passive L-Band
Splitter, Active L-band
Extended C-Band LNBs
Power Supply, Redundant
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Broadcast / Satellite Signal Processing
Random Noise Reducers
Picture Quality Restorer
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| Part Number: HQ |
Description:
Xintekvideo’s Picture Quality Restorer Model HQ2000 is a state of the art signal processing system that essentially removes all electrical and ignition-type noise from NTSC color television signals. In addition it significantly reduces random noise and other interference. It is particularly effective in reducing satellite of FM link threshold noise that normally appears as “sparkles” or streaks as well thermal noise. It is, in effect, a means of extending threshold in FM links.
Aside from the standard analog-to-digital and digital-to-analog conversion operations, the system signal processing is all digital. Every video pixels is analyzed and a differentiation is made based on the statistical characteristics of unwanted noise and errors. Sophisticated circuits are used to analyze the video signal and search for impulse noise using multidimensional correlation techniques. To differentiate between impulse noise and moving video details, motion is also detected using a number of video frames for temporal correlation detection. When the circuits determine that a particular video pixel has noise perturbation or is in error, and the motion circuits determine that there is no motion in the vicinity of the error, that pixel is replaced with a value predicted from spatio-temporal neighboring pixels. |
Features:
 Input: NTSC color video signal, 1v pp into 75 Ohms Return Loss >40dB
Output: NTSC color video signal, 1v pp into 75 Ohms Return Loss >35dB
All processing is performed on the composite color signal thus avoiding color decoding and re-encoding impairments. |
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